title: Serum vitamin B12 levels in dairy cows before and after parturition.
mesh_terms: D000818:Animals; D002417:Cattle / Q000097:blood*; D005260:Female; D007743:Labor, Obstetric; D011247:Pregnancy; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12